Bolster-beam journal



(N0 Model.)

E. W. M. HUGHES. BOLSTER BEAM JOURNAL.

No. 421 987. Patented Peb.25, 1890.

w ga/ Nrrnn STATES Arnr FFICE.

EDlVARD \VILLIAM MACKENZIE-HUGHES, OF CHICAGO, ILLINOIS, ASSIGNOR TO THEFOX SOLID PRESSED STEEL COMPANY, OF ILLINOIS.

BOLSTER-BEAM JOURNAL.

SPECIFICATION forming part of Letters Patent No. 421,937, dated February25, 18290.

Application filed January 3, 1889- To aZZ whom it may concern:

Be it known that I, EDWARD \VILLIAM MAC- KENZIE-IIUGHES, of Chicago,Cook county, Illinois, have invented a new and useful Improvement inBolster-Beam Journals, of which the following is a full, true, and exactdescription, reference being had to the accompanying drawings.

In journals or bearing-plates for bolsterbeams as ordinarily made greatdifficulty is experienced in obtaining uniformity of surface andresistance to wear. These plates, being usually made of cast metal, areliable to variation in shape and structural difficulties. By myinvention I make both these plates between dies of pressed steel,whereby I insure uniformity and certainty of fit between the variousparts and a uniform structure, rendering fracture substantiallyimpossible.

In my drawings, Figure 1 represents a top view of the upper part of thejournal attached to the car; Fig. 2, a view of the lower part of thejournal attached to the truck; Fig. 8, a section through the same, andFig. 4 an exterior View of the two parts in position.

In the drawings, A represents the upper journal, which is pressed from aplate of steel, and consists of a central cup shaped portion having acylindrical elevation in its bottom. A flange projects from the top ofthe cup-shaped portion, by means of which the journal is secured to theaxle of the vehicle, the flange being preferably provided with holes forthis purpose, although it may be secured in any other suitable manner.The lower journal B is also pressed from a plate of steel, and consistsof an outer cylindrical portion, the top of which is depressed orillclined inwardly to correspond with the bot tom of the centralcupshaped portion of the journal A, thereby forming an oil-receptacle aswell as forming bearing surfaces. Rising from the lowest portion of thedepressed top of the journal B is a smaller cylindrical portion, whichfits within the cylindrical elevation in the bottom of the cup-shapedportion ofthe journal A. The smaller or inner cylindrical portion of thejournal B and the elevation of the journal A engage with each other andprevent lateral. movement. By hav= Serial No. 295,321. (No model.)

ing the bottom elevation in the cup-shaped portion of the journal Aresting on. the top of the inner cylindrical portion of the ournal 13the wearing-surfaces are increased and a portion of the load is taken upby the-top of the inner cylindrical portion of the journal 13, neitherof which objects is accomplished in the construction shown in my formerpatent, No. 408,032, which is intended to permit of a rocking motion inall directions. The journals are provided with holes which register witheach other and through which a bolt can be passed forsecuring themtogether. As the top of the elevation is below the top of the cup withinwhich it is formed, the top of the bolt does not interfere with the axleto which the journal is secured, thus avoiding additional recesses ordepressions, as in journals as heretofore constructed. The same resultis also accomplished in the lower journal by having the innercylindrical portion above the bottom of the journal, the journal beingalso provided with a flange around it for securing it to the axle in thesame manneras the upper journal.

By making the journals of pressed steel, as above described, they can bemade very cheaply, as they can be stamped up from a sheet-metal plate atone operation, thus always insuring uniformity of size and conse quenteven contact at all points of the bearing-surfaces, and by making thebearingsurfaces conical or cup-shaped and the supporting-walls for thesame cylindrical the greatest possible strength and durability issecured with the least possible material; and as the journals are madeof pressed steel and the bearing-surfaces are suspended, as it were,intermediate the top and bottom, or, rather, the outer faces of thejournals, they possess an amount of elasticity that cannot be secured byany other construction, and consequently the liability to damage to thejournals from jars or jolts in passing over obstructions, as well as tothe other parts of the vehicles to which the journals are at tached, isreduced to the minimum.

Without limiting myself to the exact con struction shown, I claim-Journals for bolstenbeams and fifth-wheels of vehicles, consisting ofplates of pressed steel, the upper journal having a central cupshapedportion with a cylindrical elevation in its bottom, and the lowerjournal having an outer cylindrical portion, the top of which isinclined inward to correspond with and bear against the cup-shapedportion of the upper journal, and an inner cylindrical portion risingfrom said inclined top, fitting Within and engaging With the elevationof IO the upper journal, said inner cylindrical portion and elevationbeing each provided with a hole registering With each other for thereception of a bolt, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of r 5 two subscribing Witnesses.

EDWARD WILLIAM MACKENZIE-HUGHES. lVit-nesses:

J. O. STIRLING, W. S. HARTWELL.

